How much hp would this combination make?

Alpine · Post by **Alpine** » Wed Feb 04, 2004 9:40 pm

If I rebuilt the 2.0L from my 914 with Euro (8:1 c/r) pistons and cylinders and added dual Weber 44 IDF carbs and a Kerry Hunter (or Tangerine Racing) header but left the rest of the engine (heads, cam etc.) completely stock, how much hp would this combination make?

dstar5000 · Post by **dstar5000** » Thu Feb 05, 2004 11:13 am

Prolly around 90.

Don

Alpine · Post by **Alpine** » Thu Feb 05, 2004 2:21 pm

Thanks for your input but that seems a bit low. Jake's 2056 motors make 110 - 120hp and the simulations I ran (I know, I know) for my combo show I should make 100 hp+.

73notch · Post by **73notch** » Thu Feb 05, 2004 3:17 pm

jakes engines are proven combos. changing the cam would help alot. upping the cr would help also.

Alpine · Post by **Alpine** » Thu Feb 05, 2004 4:02 pm

This engine is very close in specs to Jake's 2056 engine. I've been playing a lot with my Engine Analyzer software and in these simulations the stock cam consistently produces a lot of torque and good hp. On the small displacement (~ 2.0L) engines that I have simulated the stock cam produces greater torque and hp than the more "radical" cams up to about 5000 rpm and the engine with the stock cam still produces more peak torque.

factman · Post by **factman** » Thu Feb 05, 2004 7:41 pm

well the stock motor was built for toque so that is possible. well for busses anyways. anytime you go after HP you will lose some torque in the process. so how do you know stock head CFM? im curious to know what is also. without it its impossible to know HP and torque figures. thanks

SAM

Alpine · Post by **Alpine** » Thu Feb 05, 2004 8:07 pm

For head cfm I can choose from a menu. For example, in the figure below the 43% flow efficiency for the intake port comes by choosing "Good Production Heads" from a menu. Same thing for the exhaust port flow efficiency. For $99 I can upgrade to the "Plus" version of Engine Analyzer 3.2 and that will allow me to "enter a full flow curve of up to eight lift points" and then the program calculates the flow efficiency from those cfm values.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Feb 05, 2004 9:33 pm

I have never used a Tangerine on an engine that small, (except an 1800- BUT thats an F production

I'd say a solid 110 if you use the right cam..

Alpine · Post by **Alpine** » Thu Feb 05, 2004 10:16 pm

I want to keep the internals stock. External things like carbs or headers are fine because they can easily be removed and the motor put back to stock.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Feb 05, 2004 10:26 pm

ah....

There is NOTHING worse than the stock cam.... its a hideous beast that drinks gas, fries heads, and has a powerband so narrow you'll think you are driving a Farmall tractor!

But thats just me!

cnavarro · Post by **cnavarro** » Thu Feb 05, 2004 11:27 pm

You cannot use estimates for headflows. You must use real data. I posted flow charts for 42 x 38s here on the forums somewhere (can't remember what thread though). That will make all the difference in the world. If you can wait till I get back next week, I can give you #s for stock 42 x 36s.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance